package collection;

import java.util.ArrayList;
import java.util.Collection;

//集合间的操作
public class CollectionOperDemo {
    public static void main(String[] args) {
        Collection c1=new ArrayList();
        c1.add("java");
        c1.add(("ios"));
        c1.add(".net");

        Collection c2=new ArrayList();
        c2.add("android");
        c2.add("c++");
        c2.add("java");
        System.out.println("c2:"+c2);

        c1.addAll(c2);//将c2添加到c1中
        System.out.println("c1:"+c1);
        System.out.println("c2:"+c2);

        Collection c3=new ArrayList();
        c3.add("c++");
        c3.add("android");
        c3.add("php");
        System.out.println("c3:+"+c3);
        boolean contains=c1.containsAll(c3);
        System.out.println("是否包含："+contains);

        //取交集：

      /*  c1.retainAll(c3);
        System.out.println("c1:"+c1);
        System.out.println("c3:"+c3);

       */

        //删除交集：将c1中与c3共有的元素删除，c3不变
        c1.removeAll(c3);
        System.out.println("c1:"+c1);
        System.out.println("c3:"+c3);



    }
}
